A Қаш: $ ë : * T 2. LÀ ere И - > 
1914] 
SCHRAMM—GRASS-GREEN ALG AND ELEMENTARY NITROGEN 179 
TABLE III 
RESULTS OF THE 1913 EXPERIMENT 
(March 29-April 16, 1913.) 
Sol. 1 | Sol. 2 | Sol. 3| Sol. 4 | Sol. 5 | Sol. 6 | Sol. 7 | Sol. 8 
Organism (with-| (with | (with-| (with |(with-| (with | (with-| (with 
out | c.n.) | out c.n.) out | c.n.) | out c.n.) 
c.n.) c.n.) c.n.) c.n.) 
Chlamydomonas pisi- 
formis Dill forma 
minor Spargo. 
Temp. 18.5-24?C. 
- | ++] =- | +++) | ++ - 4. 
EY. E 20.5. _ E +4 ds ix ый 4-4 
Chlorella sp., large 
form with clath- 
rate chromato-| — + -— ++ - + - +++ 
phore. Temp. 18.5 
-242С. 
Ditto. Temp. 29.5- 
30.5°С. р = + т" ++ vd y b c ++ 
Stichococcus bacillaris 
AK Temp. 18.5- - + - + - + = ++ 
Ditto. Temp. 29.5- 
30.5°С. 
Chlorococcum humi- 
cola (Nàg. Ra- 4 
benh. Temp. 18.5 
-24?C. 
Ditto. Temp. 29.5- 
30.5°С. s =. йы +++ =" E xd +++ 
- |++4+4) - | + | - (+++ 
Protosiphon  botryoi- 
des (Kütz.) Кез. — + - +++! - ++ - dM 
Temp. 18.5-24°С. 
Ditto. Temp. 29.5- 3 
30.5*C. ES = =| tte] + = 144+ 
Chlorella vulgarisBey. 
Temp. т" ni a a eee v 
Ditto. Temp. 29.5- 
30.5°C. 
Kirchneriella sp. 
Temp. 18.5-242С. 
Ditto. Temp. 29.5- 
30.5°С. 
ЖА scarcely detectable and rapidly disappearing growth developed as іп the 
1912 experiment. 
